/**
*@title 身份证校验
**/
var idCardNoUtil = {
    /*省,直辖市代码表*/
    provinceAndCitys: {11:"北京",12:"天津",13:"河北",14:"山西",15:"内蒙古",21:"辽宁",22:"吉林",23:"黑龙江",31:"上海",32:"江苏",33:"浙江",34:"安徽",35:"福建",36:"江西",37:"山东",41:"河南",42:"湖北",43:"湖南",44:"广东",45:"广西",46:"海南",50:"重庆",51:"四川",52:"贵州",53:"云南",54:"西藏",61:"陕西",62:"甘肃",63:"青海",64:"宁夏",65:"新疆",71:"台湾",81:"香港",82:"澳门",91:"国外"},
    /*每位加权因子*/
    powers: ["7","9","10","5","8","4","2","1","6","3","7","9","10","5","8","4","2"],
    /*第18位校检码*/
    parityBit: ["1","0","X","9","8","7","6","5","4","3","2"],
    /*校验地址码*/
    checkAddressCode: function(addressCode){
        var check = /^[1-9]\d{5}$/.test(addressCode);
        if(!check) return false;
        if(idCardNoUtil.provinceAndCitys[parseInt(addressCode.substring(0,2))]){
            return true;
        }else{
            return false;
        }
    },
    /*校验日期码*/
    checkBirthDayCode: function(birDayCode){
        var check = /^[1-9]\d{3}((0[1-9])|(1[0-2]))((0[1-9])|([1-2][0-9])|(3[0-1]))$/.test(birDayCode);
        if(!check) return false;
        var yyyy = parseInt(birDayCode.substring(0,4),10);
        var mm = parseInt(birDayCode.substring(4,6),10);
        var dd = parseInt(birDayCode.substring(6),10);
        var xdata = new Date(yyyy,mm-1,dd);
        if(xdata > new Date()){
            return false;//生日不能大于当前日期
        }else if ( ( xdata.getFullYear() == yyyy ) && ( xdata.getMonth () == mm - 1 ) && ( xdata.getDate() == dd ) ){
            return true;
        }else{
            return false;
        }
    },
    /**
     * @title 计算校检码
     */
    getParityBit: function(idCardNo){
        var id17 = idCardNo.substring(0,17);
        /*加权 */
        var power = 0;
        for(var i=0;i<17;i++){
            power += parseInt(id17.charAt(i),10) * parseInt(idCardNoUtil.powers[i]);
        }
        /*取模*/
        var mod = power % 11;
        return idCardNoUtil.parityBit[mod];
    },
    /**
     * @title 验证校检码
     */
    checkParityBit: function(idCardNo){
        var parityBit = idCardNo.charAt(17).toUpperCase();
        if(idCardNoUtil.getParityBit(idCardNo) == parityBit){
            return true;
        }else{
            return false;
        }
    },
    /**
     * @title 校验15位或18位的身份证号码
     */
    checkIdCardNo: function(idCardNo){
        //15位和18位身份证号码的基本校验
        var check = /^\d{15}|(\d{17}(\d|x|X))$/.test(idCardNo);
        if(!check) return false;
        //判断长度为15位或18位 
        if(idCardNo.length==15){
            return idCardNoUtil.check15IdCardNo(idCardNo);
        }else if(idCardNo.length==18){
            return idCardNoUtil.check18IdCardNo(idCardNo);
        }else{
            return false;
        }
    },
    /**
     * @title 校验15位的身份证号码
     */
    check15IdCardNo: function(idCardNo){
        //15位身份证号码的基本校验
        var check = /^[1-9]\d{7}((0[1-9])|(1[0-2]))((0[1-9])|([1-2][0-9])|(3[0-1]))\d{3}$/.test(idCardNo);  
        if(!check) return false;
        //校验地址码
        var addressCode = idCardNo.substring(0,6);
        check = idCardNoUtil.checkAddressCode(addressCode);
        if(!check) return false;
        var birDayCode = '19' + idCardNo.substring(6,12);
        //校验日期码
        return idCardNoUtil.checkBirthDayCode(birDayCode);
    },
    /**
     * @title 校验18位的身份证号码
     */
    check18IdCardNo: function(idCardNo){
        //18位身份证号码的基本格式校验
        var check = /^[1-9]\d{5}[1-9]\d{3}((0[1-9])|(1[0-2]))((0[1-9])|([1-2][0-9])|(3[0-1]))\d{3}(\d|x|X)$/.test(idCardNo);
        if(!check) return false;
        //校验地址码
        var addressCode = idCardNo.substring(0,6);
        check = idCardNoUtil.checkAddressCode(addressCode);
        if(!check) return false;
        //校验日期码
        var birDayCode = idCardNo.substring(6,14);
        check = idCardNoUtil.checkBirthDayCode(birDayCode);
        if(!check) return false;
        //验证校检码
        return idCardNoUtil.checkParityBit(idCardNo);
    },
    /**
     * @title 获取证件号码的出生日期
     */
    getBirth(idCardNo) {
        if(!idCardNo) return null;
        var birthDayCode = idCardNo.substring()
        return idCardNo.substring(6,10) + '-' + idCardNo.substring(10,12) + '-' + idCardNo.substring(12,14);
    },
    /*
     * @title 获取证件号码的性别
     * @return {String} F代表男性别，M代表女性
     */
    getGender(idCardNo){
        if(!idCardNo && idCardNo.length === 18) return null;
        return idCardNo.slice(14, 17) % 2 ? "M" : "F"; 
    },
    /**
     * @title 获取证件号码的年龄
     */
    GetAge(identityCard) {
        var len = (identityCard + "").length;
        if (len == 0) {
            return 0;
        } else {
            if ((len != 15) && (len != 18))//身份证号码只能为15位或18位其它不合法
            {
                return 0;
            }
        }
        var strBirthday = "";
        if (len == 18)//处理18位的身份证号码从号码中得到生日和性别代码
        {
            strBirthday = identityCard.substr(6, 4) + "/" + identityCard.substr(10, 2) + "/" + identityCard.substr(12, 2);
        }
        if (len == 15) {
            strBirthday = "19" + identityCard.substr(6, 2) + "/" + identityCard.substr(8, 2) + "/" + identityCard.substr(10, 2);
        }
        //时间字符串里，必须是“/”
        var birthDate = new Date(strBirthday);
        var nowDateTime = new Date();
        var age = nowDateTime.getFullYear() - birthDate.getFullYear();
        //再考虑月、天的因素;.getMonth()获取的是从0开始的，这里进行比较，不需要加1
        if (nowDateTime.getMonth() < birthDate.getMonth() || (nowDateTime.getMonth() == birthDate.getMonth() && nowDateTime.getDate() < birthDate.getDate())) {
            age--;
        }
        return age;
    }
};
export default {
    checkIdCardNo: value => {
        return idCardNoUtil.checkIdCardNo(value)
    },
    getBirth: idCardNo => {
        return idCardNoUtil.getBirth(idCardNo)
    },
    getGender: idCardNo => {
        return idCardNoUtil.getGender(idCardNo)
    },
    GetAge: idCardNo => {
        return idCardNoUtil.GetAge(idCardNo)
    }
}
